Quantifying exposure to diagnostic radiation and factors associated with exposure to high levels of radiation in korean patients with inflammatory bowel disease

Yoon Suk Jung, Dong Il Park, Eun Ran Kim, Young Ho Kim, Chang Kyun Lee, Suck Ho Lee, Jae Hak Kim, Kyu Chan Huh, Sung Ae Jung, Soon Man Yoon, Hyun Joo Song, Sun Jin Boo, Hyun Joo Jang, You Sun Kim, Kang Moon Lee, Jeong Eun Shin

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Background: Several recent studies have revealed that diagnostic imaging can result in exposure to potentially harmful levels of ionizing radiation in patients with inflammatory bowel disease (IBD). However, these studies have been conducted exclusively in Western countries, and no data are available in Asian populations. The aim of this study was to estimate the diagnostic radiation exposure in Korean patients with IBD and to determine the factors associated with high radiation exposure. Methods: Patients with an established diagnosis of IBD between July 1987 and January 2012 were investigated in 13 university hospitals in Korea. The cumulative effective dose (CED) was calculated retrospectively from standard tables. Results: A total of 777 patients with Crohn's disease (CD) and 1422 patients with ulcerative colitis (UC) were included in the study. The mean CED for CD and UC were 53.6 and 16.4 mSv, respectively (P < 0.001). CTof CD and UC accounted for 81.6% and 71.2% of total effective dose, respectively. Importantly, 34.7% of patients with CD and 8.4% of patients with UC were exposed to high levels of radiation (CED > 50 mSv) (P < 0.001). High radiation exposure was associated with long disease duration, ileocolonic disease, upper gastrointestinal tract involvement, surgical intervention, hospitalization, and the requirement for oral steroids in CD, and with surgical intervention, hospitalization, and the requirement for infliximab in UC. Conclusions: A substantial proportion of patients with IBD, especially patients with CD, were exposed to significantly harmful amounts of diagnostic radiation, mainly as a result of CT examination. Given that IBD is a life-long illness, strategies to reduce radiation exposure from diagnostic imaging need to be considered.

Original languageEnglish
Pages (from-to)1852-1857
Number of pages6
JournalInflammatory Bowel Diseases
Volume19
Issue number9
DOIs
StatePublished - Aug 2013

Keywords

  • Crohn's disease
  • Diagnostic imaging
  • Radiation exposure
  • Ulcerative colitis

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